RJ
Rosa Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Harrison-County, Iowa
Our Model Tree links this Rosa Johnson across the 1920, 1930 and 1940 US Censuses in Harrison-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1888), then head of a 6-person household.
Age 52
b. ~1888
Female
Head
Born: Iowa
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Harrison-County, Iowa |
| Surname | Johnson |
| Given Name | Rosa |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Widowed |
| Birthplace | Iowa |
| 1935 Residence (City) | Boyer Twp. |
| 1935 Residence (County) | Harrison |
| Additional Details | |
| Industry | H |
| Highest Grade | H 4 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Boyer Twp |
| Est. Birth Year | ~1888 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Rosa | Age | Birth yr |
|---|---|---|---|---|
| Vera Johnson | Daughter | — | 21 | ~1919 |
| Rosa Johnson | Head | — | 52 | ~1888 |
| Harold Johnson | Son | — | 14 | ~1926 |
| Bernard Johnson | Son | — | 8 | ~1932 |
| Harlan Johnson | Son | — | 10 | ~1930 |
| Robert Johnson | Son | — | 16 | ~1924 |
Census Appearances
1920
Harrison, Iowa
Spouse, age 31
Harrison, Iowa · implied b. ~1889 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Rosa |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Harrison, Iowa
Spouse, age 42
Harrison, Iowa · implied b. ~1888 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Rosa |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 27 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Harrison-County, Iowa
Head, age 52
Harrison-County, Iowa · implied b. ~1888 — 6 household members
| Surname | Johnson |
| Given Name | Rosa |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Widowed |
| Birthplace | Iowa |
| 1935 Residence (City) | Boyer Twp. |
| 1935 Residence (County) | Harrison |
| Industry | H |
| Highest Grade | H 4 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Rosa Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Rosa Johnson
Head · 1940 · age 52 · b. ~1888 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Harrison-County, Iowa
Open full size
1940 US Federal Census — Harrison-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01166-00079)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Nellie Collins | 59 | Wife | — | Iowa |
| 42 | Cecil A. Collins | 32 | Son | Farm Helper | Iowa |
| 43 | Lyle F. Collins | 27 | Son | Farm Helper | Iowa |
| 44 | Leo O. Schmitt | 28 | Head | Farmer | Iowa |
| 45 | Frances Schmitt | 26 | Wife | — | Iowa |
| 46 | Donald Schmitt | 5 | Son | — | Iowa |
| 47 | Wayne Schmitt | 3 | Son | — | Iowa |
| 48 | Delores Schmitt | 2 | Daughter | — | Iowa |
| 49 | Lloyd O. Timm | 29 | Head | Farmer | Iowa |
| 50 | Geneva Timm | 26 | Wife | — | Iowa |
| 51 | Neil Timm | 4 | Son | — | Iowa |
| 52 | Robert W. Haas | 31 | Head | Engineer | Iowa |
| 53 | Thelma C. Haas | 30 | Wife | — | Iowa |
| 54 | Sandra Haas | 2 | Daughter | — | Iowa |
| 55 | Nettie Pugley | 82 | Head | — | Iowa |
| 56 | Agnes Richie | 53 | Daughter | Helper | Iowa |
| 57 | Rosa Johnson THIS PERSON | 52 | Head | — | Iowa |
| 58 | Robert Johnson | 16 | Son | — | Iowa |
| 59 | Vera Johnson | 21 | Daughter | Housework | Iowa |
| 60 | Harold Johnson | 14 | Son | — | Iowa |
| 61 | Harlan Johnson | 10 | Son | — | Iowa |
| 62 | Bernard Johnson | 8 | Son | — | Iowa |
| 63 | Frank J. Lankup | 52 | Head | Farmer | Nebraska |
| 64 | Myrtle L. Lankup | 53 | Wife | — | Nebraska |
| 65 | Henry Staley | 38 | Hired hand | Laborer | Iowa |
| 66 | Charles Mullinex | 57 | Head | Farmer | Iowa |
| 67 | Anne B. Mullinex | 52 | Wife | — | Iowa |
| 68 | Charles A. Mullinex | 19 | Daughter | — | Iowa |
| 69 | Hiram Jenkins | 38 | Head | Laborer | Missouri |
| 70 | Hazel Jenkins | 34 | Wife | — | Iowa |
| 71 | Hiram Jr. Jenkins | 8 | Son | — | Iowa |
| 72 | Grant D. Reed | 25 | Head | Farmer | Iowa |
| 73 | Alma Reed | 70 | Wife | — | Nebraska |
| 74 | Donald Reed | 14 | Grandson | — | Iowa |
| 75 | Harold Banion | 45 | Head | Farmer | Iowa |
| 76 | Loretta Banion | 42 | Wife | — | Iowa |
| 77 | Mary Ellen Banion | 14 | Daughter | — | Iowa |
| 78 | Joe Banion | 9 | Son | — | Iowa |
| 79 | Fred Coe | 59 | Head | Farmer | Iowa |
| 80 | Mary Coe | 46 | Wife | — | Iowa |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)